There are uniform electric and magnetic fields in a region pointing along X-axis. An particle is projected along Y-axis with a velocity v. The shape of the trajectory will be
Option: 1 circular in XZ plane
Option: 2 circular in YZ plane
Option: 3 helical with its axis parallel to X-axis
Option: 4 helical with its axis parallel to Y-axis
The shape of the trajectory will be helical with its axis parallel to X-axis